In the steady state, cardiac output equals. venous return. Factors that cause hypereffective heart. Sympathetic stimulation can increase the effectiveness of the heart via: (2) increasing the strength of heart contraction. Factors that can cause a hypoeffective heart: (1) coronary artery blockage.
Thursday, March 19, 2015 - 11:09. Ed Sheeran has added yet another amazing accolade to his collection with the news that his global smash hit sophomore album X has hit the 2 million sales mark, joining a select band of chosen superstars to hit the same achievement.
Out of the 95 contestants listed, 21 of them were under the age of 20, including two winners and two runners-up. Season four winner Carrie Underwood currently holds the record for the highest-selling American Idol album in the United States, with more than six million copies.